rename libraries

fix

remove

.gitignore

@@ -1,6 +1,6 @@
 /target
 *.uf2
-abi_sys.h
+userlib_sys.h
 assets/gif/bad_apple.gif
 picolibc
 user-apps/gboy/Peanut-GB

Cargo.lock

@@ -12,27 +12,6 @@ dependencies = [
  "regex",
 ]
 
-[[package]]
-name = "abi"
-version = "0.1.0"
-dependencies = [
- "abi_sys",
- "embedded-graphics",
- "once_cell",
- "rand_core 0.9.3",
-]
-
-[[package]]
-name = "abi_sys"
-version = "0.1.0"
-dependencies = [
- "bitflags 2.10.0",
- "cbindgen",
- "defmt 0.3.100",
- "embedded-graphics",
- "strum",
-]
-
 [[package]]
 name = "ahash"
 version = "0.8.12"
@@ -243,9 +222,9 @@ checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 name = "calculator"
 version = "0.1.0"
 dependencies = [
- "abi",
  "embedded-graphics",
  "embedded-layout",
+ "userlib",
 ]
 
 [[package]]
@@ -1230,9 +1209,9 @@ dependencies = [
 name = "gallery"
 version = "0.1.0"
 dependencies = [
- "abi",
  "embedded-graphics",
  "tinybmp",
+ "userlib",
 ]
 
 [[package]]
@@ -1272,10 +1251,10 @@ dependencies = [
 name = "gif"
 version = "0.1.0"
 dependencies = [
- "abi",
  "embedded-graphics",
  "selection_ui",
  "tinygif",
+ "userlib",
 ]
 
 [[package]]
@@ -1450,7 +1429,6 @@ dependencies = [
 name = "kernel"
 version = "0.0.1"
 dependencies = [
- "abi_sys",
  "assign-resources",
  "bitflags 2.10.0",
  "bt-hci",
@@ -1493,6 +1471,7 @@ dependencies = [
  "strum",
  "talc",
  "trouble-host",
+ "userlib_sys",
 ]
 
 [[package]]
@@ -2157,10 +2136,10 @@ checksum = "c1257cd4248b4132760d6524d6dda4e053bc648c9070b960929bf50cfb1e7add"
 name = "selection_ui"
 version = "0.1.0"
 dependencies = [
- "abi",
  "embedded-graphics",
  "embedded-layout",
  "embedded-text",
+ "userlib",
 ]
 
 [[package]]
@@ -2271,10 +2250,10 @@ dependencies = [
 name = "snake"
 version = "0.1.0"
 dependencies = [
- "abi",
  "embedded-graphics",
  "embedded-snake",
  "rand",
+ "userlib",
 ]
 
 [[package]]
@@ -2647,6 +2626,27 @@ dependencies = [
  "usbd-hid-descriptors",
 ]
 
+[[package]]
+name = "userlib"
+version = "0.1.0"
+dependencies = [
+ "embedded-graphics",
+ "once_cell",
+ "rand_core 0.9.3",
+ "userlib_sys",
+]
+
+[[package]]
+name = "userlib_sys"
+version = "0.1.0"
+dependencies = [
+ "bitflags 2.10.0",
+ "cbindgen",
+ "defmt 0.3.100",
+ "embedded-graphics",
+ "strum",
+]
+
 [[package]]
 name = "uuid"
 version = "1.18.1"
@@ -2758,11 +2758,11 @@ dependencies = [
 name = "wav_player"
 version = "0.1.0"
 dependencies = [
- "abi",
  "embedded-audio",
  "embedded-graphics",
  "rand",
  "selection_ui",
+ "userlib",
 ]
 
 [[package]]

Cargo.toml

@@ -2,14 +2,14 @@
 resolver = "3"
 members = [
   "kernel",
-  "abi_sys",
-  "abi",
+  "userlib_sys",
+  "userlib",
   "selection_ui",
-  "user-apps/calculator",
-  "user-apps/snake",
-  "user-apps/gallery",
-  "user-apps/gif",
-  "user-apps/wav_player",
+  "user_apps/calculator",
+  "user_apps/snake",
+  "user_apps/gallery",
+  "user_apps/gif",
+  "user_apps/wav_player",
 ]
 
 [profile.release]

README.md

@@ -6,21 +6,22 @@ This project provides a minimal kernel, ABI, and user-space applications to expe
 ## Status
 
 Basic synchronous applications are working great.  
-Current focus is on **expanding the ABI syscalls** and **fixing the MSC/USB-SCSI driver** to make application development easier and smoother.
+Current focus is on exanding applications and porting software, finding bufs in ffi, and making sure the kernel is as stable as possible.
 
 ## Project Structure
 
 - **`kernel/`** – The core OS kernel (task scheduling, drivers, memory, etc.)
-- **`abi_sys/`** – Shared application binary interface definitions for kernel ↔ userspace (Repr "C")
-- **`abi/`** – Rust focused ABI helpers and abstractions for easier development
-- **`user-apps/`** – Collection of userspace programs (calculator, snake, etc.)
+- **`userlib_sys/`** – FFI bindings for kernel syscalls - kernel ↔ userspace (Repr "C")
+- **`userlib/`** – Rust wrapper on top of `userlib_sys` 
+- **`picolib/`** – Built with ```just newlib```, and provides libc symbols when linking with C libraries 
+- **`user-apps/`** – Collection of userspace programs (gif player, wav player, calculator, snake, etc.)
 
 ## Features
 
 - Minimal Rust-based kernel targeting the PicoCalc
-- Custom ABI for safe communication between kernel and applications
+- Custom ABI for *Mostly* safe communication between kernel and applications
 - Support for multiple user-space applications
-- Hardware drivers tailored for the PicoCalc
+- Hardware drivers tailored for the PicoCalc( Audio, Display, Keyboard, ans Storage )
 
 ## Getting Started
 

justfile

@@ -9,7 +9,7 @@ kernel-release board:
 binary-args := "RUSTFLAGS=\"-C link-arg=-pie -C relocation-model=pic\""
 
 cbindgen:
-    cbindgen abi_sys --output abi_sys.h -q
+    cbindgen userlib_sys --output userlib_sys.h -q
 
 newlib:
     #!/bin/bash

kernel/Cargo.toml

@@ -99,4 +99,4 @@ embedded-alloc = { version = "0.6.0", features = [
 ], optional = true }
 bumpalo = "3.19.0"
 
-abi_sys = { path = "../abi_sys" }
+userlib_sys = { path = "../userlib_sys" }

kernel/src/abi.rs

@@ -1,15 +1,15 @@
-use abi_sys::{
-    AUDIO_BUFFER_SAMPLES, AllocAbi, AudioBufferReady, CLayout, CPixel, DeallocAbi, DrawIterAbi,
-    FileLen, GenRand, GetMsAbi, ListDir, PrintAbi, ReadFile, RngRequest, SendAudioBuffer,
-    SleepMsAbi, WriteFile, keyboard::*,
-};
 use alloc::{string::ToString, vec::Vec};
 use core::{ffi::c_char, ptr, sync::atomic::Ordering};
-use embassy_rp::clocks::{RoscRng, clk_sys_freq};
+use embassy_rp::clocks::{clk_sys_freq, RoscRng};
 use embassy_time::Instant;
 use embedded_graphics::draw_target::DrawTarget;
 use embedded_sdmmc::LfnBuffer;
 use heapless::spsc::Queue;
+use userlib_sys::{
+    keyboard::*, AllocAbi, AudioBufferReady, CLayout, CPixel, DeallocAbi, DrawIterAbi, FileLen,
+    GenRand, GetMsAbi, ListDir, PrintAbi, ReadFile, RngRequest, SendAudioBuffer, SleepMsAbi,
+    WriteFile, AUDIO_BUFFER_SAMPLES,
+};
 
 #[cfg(feature = "psram")]
 use crate::heap::HEAP;

kernel/src/audio.rs

@@ -15,7 +15,7 @@ use fixed::traits::ToFixed;
 
 pub const SAMPLE_RATE_HZ: u32 = 22_050;
 const AUDIO_BUFFER_SAMPLES: usize = 1024;
-const _: () = assert!(AUDIO_BUFFER_SAMPLES == abi_sys::AUDIO_BUFFER_SAMPLES);
+const _: () = assert!(AUDIO_BUFFER_SAMPLES == userlib_sys::AUDIO_BUFFER_SAMPLES);
 
 // 8bit stereo interleaved PCM audio buffers
 pub static mut AUDIO_BUFFER: [u8; AUDIO_BUFFER_SAMPLES * 2] = [0; AUDIO_BUFFER_SAMPLES * 2];

kernel/src/elf.rs

@@ -2,7 +2,7 @@ use crate::{
     abi,
     storage::{File, SDCARD},
 };
-use abi_sys::{CallTable, EntryFn};
+use userlib_sys::{CallTable, EntryFn};
 use alloc::{vec, vec::Vec};
 use bumpalo::Bump;
 use core::ptr;

kernel/src/main.rs

@@ -39,7 +39,7 @@ use crate::{
     storage::{SDCARD, SdCard},
     ui::{SELECTIONS, clear_selection, ui_handler},
 };
-use abi_sys::EntryFn;
+use userlib_sys::EntryFn;
 use bumpalo::Bump;
 use core::sync::atomic::{AtomicBool, Ordering};
 use embassy_executor::{Executor, Spawner};

kernel/src/peripherals/keyboard.rs

@@ -1,5 +1,5 @@
 use crate::peripherals::PERIPHERAL_BUS;
-pub use abi_sys::keyboard::{KeyCode, KeyEvent, KeyState, Modifiers};
+pub use userlib_sys::keyboard::{KeyCode, KeyEvent, KeyState, Modifiers};
 
 const REG_ID_KEY: u8 = 0x04;
 const REG_ID_FIF: u8 = 0x09;

kernel/src/ui.rs

@@ -2,7 +2,7 @@ use crate::{
     BINARY_CH, display::FRAMEBUFFER, elf::load_binary, framebuffer::FB_PAUSED,
     peripherals::keyboard, storage::FileName,
 };
-use abi_sys::keyboard::{KeyCode, KeyState};
+use userlib_sys::keyboard::{KeyCode, KeyState};
 use alloc::{str::FromStr, string::String, vec::Vec};
 use core::sync::atomic::Ordering;
 use embassy_sync::{blocking_mutex::raw::CriticalSectionRawMutex, mutex::Mutex};

selection_ui/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-abi = { path = "../abi" }
+userlib = { path = "../userlib" }
 embedded-graphics = "0.8.1"
 embedded-layout = "0.4.2"
 embedded-text = "0.7.3"

selection_ui/src/lib.rs

@@ -2,25 +2,25 @@
 
 extern crate alloc;
 
-use abi::{
-    display::Display,
-    get_key,
-    keyboard::{KeyCode, KeyState},
-};
 use alloc::vec::Vec;
 use embedded_graphics::{
-    Drawable,
-    mono_font::{MonoTextStyle, ascii::FONT_10X20},
+    mono_font::{ascii::FONT_10X20, MonoTextStyle},
     pixelcolor::Rgb565,
     prelude::{Dimensions, DrawTarget, Point, Primitive, RgbColor},
     primitives::{PrimitiveStyle, Rectangle},
-    text::{Alignment, Text, renderer::TextRenderer},
+    text::{renderer::TextRenderer, Alignment, Text},
+    Drawable,
 };
 use embedded_layout::{
     align::{horizontal, vertical},
     layout::linear::{FixedMargin, LinearLayout},
     prelude::*,
 };
+use userlib::{
+    display::Display,
+    get_key,
+    keyboard::{KeyCode, KeyState},
+};
 
 #[derive(Debug)]
 pub enum SelectionUiError<DisplayError> {

user_apps/calculator/Cargo.toml

@@ -4,6 +4,6 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-abi = { path = "../../abi" }
+userlib = { path = "../../userlib" }
 embedded-graphics = "0.8.1"
 embedded-layout = "0.4.2"

user_apps/calculator/src/main.rs

@@ -2,12 +2,6 @@
 #![no_main]
 
 extern crate alloc;
-use abi::{
-    display::Display,
-    get_key,
-    keyboard::{KeyCode, KeyState},
-    println,
-};
 use alloc::{format, string::String, vec, vec::Vec};
 use core::panic::PanicInfo;
 use embedded_graphics::{
@@ -25,6 +19,12 @@ use embedded_layout::{
     layout::linear::LinearLayout,
     prelude::Chain,
 };
+use userlib::{
+    display::Display,
+    get_key,
+    keyboard::{KeyCode, KeyState},
+    println,
+};
 
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {

user_apps/gallery/Cargo.toml

@@ -4,6 +4,6 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-abi = { path = "../../abi" }
+userlib = { path = "../../userlib" }
 embedded-graphics = "0.8.1"
 tinybmp = "0.6.0"

user_apps/gallery/src/main.rs

@@ -3,13 +3,6 @@
 #![allow(static_mut_refs)]
 
 extern crate alloc;
-use abi::{
-    display::{Display, SCREEN_HEIGHT, SCREEN_WIDTH},
-    fs::{Entries, list_dir, read_file},
-    get_key,
-    keyboard::{KeyCode, KeyState},
-    println,
-};
 use alloc::{format, vec};
 use core::panic::PanicInfo;
 use embedded_graphics::{
@@ -17,6 +10,13 @@ use embedded_graphics::{
     pixelcolor::Rgb565, prelude::*, text::Text,
 };
 use tinybmp::Bmp;
+use userlib::{
+    display::{Display, SCREEN_HEIGHT, SCREEN_WIDTH},
+    fs::{Entries, list_dir, read_file},
+    get_key,
+    keyboard::{KeyCode, KeyState},
+    println,
+};
 
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {

user_apps/gif/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-abi = { path = "../../abi" }
+userlib = { path = "../../userlib" }
 selection_ui = { path = "../../selection_ui" }
 embedded-graphics = "0.8.1"
 tinygif = { git = "https://github.com/LegitCamper/tinygif" }

user_apps/gif/src/main.rs

@@ -2,24 +2,24 @@
 #![no_main]
 
 extern crate alloc;
-use abi::{
-    display::{Display, SCREEN_HEIGHT, SCREEN_WIDTH},
-    fs::{Entries, file_len, list_dir, read_file},
-    get_key, get_ms,
-    keyboard::{KeyCode, KeyState},
-    println, sleep,
-};
 use alloc::{format, vec, vec::Vec};
 use core::panic::PanicInfo;
 use embedded_graphics::{
     image::ImageDrawable,
-    mono_font::{MonoTextStyle, ascii::FONT_6X10},
+    mono_font::{ascii::FONT_6X10, MonoTextStyle},
     pixelcolor::Rgb565,
     prelude::{Point, RgbColor},
     transform::Transform,
 };
-use selection_ui::{SelectionUi, SelectionUiError, draw_text_center};
+use selection_ui::{draw_text_center, SelectionUi, SelectionUiError};
 use tinygif::Gif;
+use userlib::{
+    display::{Display, SCREEN_HEIGHT, SCREEN_WIDTH},
+    fs::{file_len, list_dir, read_file, Entries},
+    get_key, get_ms,
+    keyboard::{KeyCode, KeyState},
+    println, sleep,
+};
 
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {

user_apps/snake/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-abi = { path = "../../abi" }
+userlib = { path = "../../userlib" }
 embedded-graphics = "0.8.1"
 embedded-snake = { git = "https://github.com/LegitCamper/embedded-snake-rs" }
 rand = { version = "0.9.0", default-features = false }

user_apps/snake/src/main.rs

@@ -2,16 +2,16 @@
 #![no_main]
 
 extern crate alloc;
-use abi::{
+use core::panic::PanicInfo;
+use embedded_graphics::{pixelcolor::Rgb565, prelude::RgbColor};
+use embedded_snake::{Direction, SnakeGame};
+use userlib::{
     Rng,
     display::{Display, SCREEN_HEIGHT, SCREEN_WIDTH},
     get_key,
     keyboard::{KeyCode, KeyState},
     println, sleep,
 };
-use core::panic::PanicInfo;
-use embedded_graphics::{pixelcolor::Rgb565, prelude::RgbColor};
-use embedded_snake::{Direction, SnakeGame};
 
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {

user_apps/wav_player/Cargo.toml

@@ -4,7 +4,7 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-abi = { path = "../../abi" }
+userlib = { path = "../../userlib" }
 selection_ui = { path = "../../selection_ui" }
 embedded-graphics = "0.8.1"
 rand = { version = "0.9.0", default-features = false }

user_apps/wav_player/src/main.rs

@@ -2,24 +2,24 @@
 #![no_main]
 
 extern crate alloc;
-use abi::{
-    audio::{AUDIO_BUFFER_LEN, audio_buffer_ready, send_audio_buffer},
+use alloc::{string::String, vec::Vec};
+use core::panic::PanicInfo;
+use embedded_audio::{wav::Wav, AudioFile, PlatformFile, PlatformFileError};
+use embedded_graphics::{
+    mono_font::{ascii::FONT_6X10, MonoTextStyle},
+    pixelcolor::Rgb565,
+    prelude::RgbColor,
+};
+use selection_ui::{draw_text_center, SelectionUi, SelectionUiError};
+use userlib::{
+    audio::{audio_buffer_ready, send_audio_buffer, AUDIO_BUFFER_LEN},
     display::Display,
     format,
-    fs::{Entries, file_len, list_dir, read_file},
+    fs::{file_len, list_dir, read_file, Entries},
     get_key,
     keyboard::{KeyCode, KeyState},
     println,
 };
-use alloc::{string::String, vec::Vec};
-use core::panic::PanicInfo;
-use embedded_audio::{AudioFile, PlatformFile, PlatformFileError, wav::Wav};
-use embedded_graphics::{
-    mono_font::{MonoTextStyle, ascii::FONT_6X10},
-    pixelcolor::Rgb565,
-    prelude::RgbColor,
-};
-use selection_ui::{SelectionUi, SelectionUiError, draw_text_center};
 
 #[panic_handler]
 fn panic(info: &PanicInfo) -> ! {

userlib/Cargo.toml

@@ -1,10 +1,10 @@
 [package]
-name = "abi"
+name = "userlib"
 version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-abi_sys = { path = "../abi_sys" }
+userlib_sys = { path = "../userlib_sys" }
 embedded-graphics = "0.8.1"
 once_cell = { version = "1", default-features = false }
 rand_core = "0.9.3"

userlib/src/lib.rs

@@ -3,11 +3,11 @@
 
 extern crate alloc;
 
-use abi_sys::{RngRequest, keyboard::KeyEvent};
-pub use abi_sys::{keyboard, print};
 pub use alloc::format;
 use core::alloc::{GlobalAlloc, Layout};
 use rand_core::RngCore;
+pub use userlib_sys::{keyboard, print};
+use userlib_sys::{keyboard::KeyEvent, RngRequest};
 
 #[global_allocator]
 static ALLOC: Alloc = Alloc;
@@ -16,11 +16,11 @@ struct Alloc;
 
 unsafe impl GlobalAlloc for Alloc {
     unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
-        abi_sys::alloc(layout.into())
+        userlib_sys::alloc(layout.into())
     }
 
     unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
-        abi_sys::dealloc(ptr, layout.into());
+        userlib_sys::dealloc(ptr, layout.into());
     }
 }
 
@@ -33,28 +33,28 @@ macro_rules! println {
 }
 
 pub fn sleep(ms: u64) {
-    abi_sys::sleep(ms);
+    userlib_sys::sleep(ms);
 }
 
 pub fn get_ms() -> u64 {
-    abi_sys::get_ms()
+    userlib_sys::get_ms()
 }
 
 pub fn get_key() -> KeyEvent {
-    abi_sys::keyboard::get_key().into()
+    userlib_sys::keyboard::get_key().into()
 }
 
 pub mod display {
     use core::sync::atomic::{AtomicBool, Ordering};
 
-    use abi_sys::CPixel;
     use embedded_graphics::{
-        Pixel,
         geometry::{Dimensions, Point},
         pixelcolor::Rgb565,
         prelude::{DrawTarget, Size},
         primitives::Rectangle,
+        Pixel,
     };
+    use userlib_sys::CPixel;
 
     pub const SCREEN_WIDTH: usize = 320;
     pub const SCREEN_HEIGHT: usize = 320;
@@ -110,13 +110,13 @@ pub mod display {
                 count += 1;
 
                 if count == BUF_SIZE - 1 {
-                    abi_sys::draw_iter(unsafe { BUF.as_ptr() }, count);
+                    userlib_sys::draw_iter(unsafe { BUF.as_ptr() }, count);
                     count = 0;
                 }
             }
 
             if count > 0 {
-                abi_sys::draw_iter(unsafe { BUF.as_ptr() }, count);
+                userlib_sys::draw_iter(unsafe { BUF.as_ptr() }, count);
             }
 
             Ok(())
@@ -125,7 +125,7 @@ pub mod display {
 }
 
 fn gen_rand(req: &mut RngRequest) {
-    abi_sys::gen_rand(req);
+    userlib_sys::gen_rand(req);
 }
 
 pub struct Rng;
@@ -162,7 +162,7 @@ pub mod fs {
     use core::fmt::Display;
 
     pub fn read_file(file: &str, start_from: usize, buf: &mut [u8]) -> usize {
-        abi_sys::read_file(
+        userlib_sys::read_file(
             file.as_ptr(),
             file.len(),
             start_from,
@@ -172,7 +172,7 @@ pub mod fs {
     }
 
     pub fn write_file(file: &str, start_from: usize, buf: &[u8]) {
-        abi_sys::write_file(
+        userlib_sys::write_file(
             file.as_ptr(),
             file.len(),
             start_from,
@@ -254,7 +254,7 @@ pub mod fs {
     }
 
     pub fn list_dir(path: &str, entries: &mut Entries) -> usize {
-        abi_sys::list_dir(
+        userlib_sys::list_dir(
             path.as_ptr(),
             path.len(),
             entries.as_ptrs().as_mut_ptr(),
@@ -264,14 +264,14 @@ pub mod fs {
     }
 
     pub fn file_len(str: &str) -> usize {
-        abi_sys::file_len(str.as_ptr(), str.len())
+        userlib_sys::file_len(str.as_ptr(), str.len())
     }
 }
 
 pub mod audio {
-    pub use abi_sys::{AUDIO_BUFFER_LEN, AUDIO_BUFFER_SAMPLES, audio_buffer_ready};
+    pub use userlib_sys::{audio_buffer_ready, AUDIO_BUFFER_LEN, AUDIO_BUFFER_SAMPLES};
 
     pub fn send_audio_buffer(buf: &[u8]) {
-        abi_sys::send_audio_buffer(buf.as_ptr(), buf.len())
+        userlib_sys::send_audio_buffer(buf.as_ptr(), buf.len())
     }
 }

userlib_sys/Cargo.toml

@@ -1,5 +1,5 @@
 [package]
-name = "abi_sys"
+name = "userlib_sys"
 version = "0.1.0"
 edition = "2024"